And that's why the last sentence of the article reads: The set of shocks and conditions driving Figure 1, however, is still a puzzle. Your implication seems to be that high unemployment rates lead more people to apply for disability. No I didn't, I said: Ah..SSDI another government ATM program for many which I derived from this: In 2009, 7.8 million workers, or 3.9 percent of the working-age population, received Social Security Disability Insurance (SSDI). By 2015, that number had grown to 8.9 million, or 4.4 percent of the working-age population. To put these figures in context, consider the SSDI rate1 was 1.7 percent in 1985.